The club said in a statement released online: “Celtic are delighted to announced that Stuart Armstrong has signed a new-two year contract that will see him remain at the club until at least the summer of 2019.

Armstrong – who came on as a substitute during the Hoops’ 5-0 win over Astana – insists he is now looking to bring the fans even more success

He said: “I am delighted to sign this new contract with Celtic. I have had a tremendous time at the Club so far and it has been a period in my footballing career which I have enjoyed immensely.
“It has been an honour to play for a Club of such stature. I have enjoyed a great relationship with our supporters and we have achieved a high level of success, something it has been great to be part of.
“I’m pleased that this new contract has been agreed and I am now looking forward very much to working with the manager, our staff and my team-mates to bring the club and our fans even more success.”